arm64: dts: rockchip: add avdd-0v9-supply and avdd-1v8-supply on rk3399 rock 4c and pi4

this patch adds avdd-0v9-supply and avdd-1v8-supply to hdmi node for
Radxa ROCK 4 series.
Signed-off-by: FUKAUMI Naoki <naoki@radxa.com>
Link: https://lore.kernel.org/r/20220909195006.127957-6-naoki@radxa.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts

@@ -175,6 +175,8 @@ &gpu {
 };
 
 &hdmi {
+	avdd-0v9-supply = <&vcc_0v9_s0>;
+	avdd-1v8-supply = <&vcc_1v8_s0>;
 	ddc-i2c-bus = <&i2c3>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&hdmi_cec>;

arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi

@@ -219,6 +219,8 @@ &gpu {
 };
 
 &hdmi {
+	avdd-0v9-supply = <&vcca0v9_hdmi>;
+	avdd-1v8-supply = <&vcca1v8_hdmi>;
 	ddc-i2c-bus = <&i2c3>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&hdmi_cec>;